High Strain Dynamic Moduli and Damping Characteristics of Treated Soils

新建筑可能会使用不同的土壤处理方法，以将强震造成的破坏降至最低。几乎没有正式的研究来帮助分析合适的土壤改良技术，尽管通过专业承包商开发的创新施工技术取得了许多进展。该项目涉及罗格斯大学的马赫教授和海沃德·贝克公司的约瑟夫·威尔士先生之间的合作，海沃德·贝克公司是一家国际公认的土壤改良和地基补救专业承包商。这项合作的目的是研究处理过的土壤在高应变循环载荷下的行为，例如地震期间经历的那些。正在调查混合料和灌浆处理的土壤的动态特性，即剪切模数和阻尼特性，以评估：a)土壤处理作为减轻地震灾害的一种可行选择的潜力，以及b)现有处理过的土-结构体系对地震荷载的响应。

Different soil treatment methods may be used for new construction to minimize damage due to strong earthquakes. Little formal research exists to assist in the analysis of the proper soil improvement technique to use, though many advances have occurred through innovative construction techniques developed by specialty contractors. This project involves a collaboration between Professor Maher of Rutgers University and Mr. Joseph Welsh of Hayward Baker Inc., an internationally-recognized specialty contractor in soil improvement and foundation remediation. The objective of this collaboration is to study the behavior of treated soils subjected to high strain cyclic loads such as those experienced during earthquakes. Dynamic properties, that is, shear moduli and damping characteristics, of both admixture and grout-treated soils are being investigated to assess: a) the potential of soil treatment as a viable option in the mitigation of earthquake hazards, and b) the response of existing treated soil-structure systems to earthquake loads.